55103501 has 2 divisors, whose sum is σ = 55103502. Its totient is φ = 55103500.

The previous prime is 55103491. The next prime is 55103513. The reversal of 55103501 is 10530155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 491401 = 7390^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 55103501 - 2⁶ = 55103437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55103551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27551750 + 27551751.

It is an arithmetic number, because the mean of its divisors is an integer number (27551751).

Almost surely, 2^55103501 is an apocalyptic number.

It is an amenable number.

55103501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55103501 is an equidigital number, since it uses as much as digits as its factorization.

55103501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 55103501 is about 7423.1732432970. The cubic root of 55103501 is about 380.5336477353.

Adding to 55103501 its reverse (10530155), we get a palindrome (65633656).

The spelling of 55103501 in words is "fifty-five million, one hundred three thousand, five hundred one".